Cement-packing machine.



A. V. JENSEN.

CEMENT PACKING MACHINE.

APPLICATION FILED lAN.28. 1915. 1,148,780. Patented Aug. 3,1915.

i tvwoo I IBM 5 mm- COLUMBIA PLANOURAPH CO" 'ASHINGTON, D- C.

ALEXANDER, v. JENSEN, orv DEVILS SLIDE, UTAH:

CEMENT-PACKING MACHINE.

To all whont may concern I Be it known that I, ALEXANDER V JEN- sEN, av citizen of the United States, and a resident of Devils Slide, in the, county'of Morganand State of Utah,.ha ve invented certain new and useful Improvements in Cement-Packing Machines, of lowing is a specification. This invention relates to in cement packing machinesandthe object of the invention is to provide an improved which the folfeeding or filling mechanism for such ma i chines which shall insure that the bags into which the cement is being filled receive the full standard weight of cement before being removed from the machine. 7

Another object-of the invention is to construct the improved mechanism in such a.

manner that it may be easily andquicklyattached or built into cement packing I machines of standard orwell known snake's without requiring changes in the machine or the operation thereof. r .1

While my invention is designed to be used in combination with. cement packing ma: chines of difi'er'entdesign and construction,

it being a feature of the invention that itis;

v readily adaptable for different types of machines, I will describe and illustrate the invention with reference to ,onewell known type ofmachine, it being within the purview of a person skilled in the art to adapt my improvements to other types of packing machines. v, I

The packing machine to-which this disclosure more particularly, refers comprises The downward movement of the chair with.

a hopper or container fromwhich the cement is fed into the cementv bag by means of a 110-.

tating feed wheel. The bagwis provided with a suitablevalve in its bottom and the machine is provided with a, spout which iscement has been fedinto the bag, the latter begins to move downward within achair which supports the bag as it is being filled.

Specifieationof Letters ratent. I

improvements Patented Aug." 3, 1 15.

Application filed January 28,1915. Manama;

the bag causes the spout or tube to move downward past the-feed opening of the hopper referred to, the operation being so timed and the parts so arranged thatthe remainng? pounds of cement is; supposed to be fed into the bag during the closing movement of the spout; The moment the bag is full, the operator operates a cut-off slide to cement from the hopperfrom passmgout into the air. Thereafter a part of the chair s operated to dump the filled cement bag on a suitable table ,or conveyer which conveys the; full lbags away from the machine. A counterweight-is, provided to regulate and counterbalance the chair and bag of cement, andby means of which theempty chair is again raised to bring the spout intoregister withthe feed opening, The cut off slide is opened and the filling of the next bag co1n- -During the operation, as above described, it occursfrequently that the operator operates the cut, oil? slide and the chair as soon as he sees the latter commence to move downward with the almost filled bag. This happens through carelessness, or because he thinks the. bag iscompletely filled, or because he is busy with other bagsthe.ma-

chine usually being arranged to'fill a plurality of bags at one time or for other reasons, and thus it happens that a large percentage ofbags'of cement are shipped without being filled to standard. weight, thereby causingcomplaints and trouble as well as economic loss due to dissatisfied cement buyers, etc. v i i To avoid this trouble and to prevent the operator from removing a bag before the same is filled with the fullweight of cement for which thebag is designed, I provide av locking mechanism for maintaining the bag chair in itsupright position and to prevent tilting of said chair before the bag is completely filled.

, To this end my invention, comprises such parts and combinations ofsame as are hereinafter described and claimedand as illus-. trated in the accompanying drawing in which 7 H r I Figure lis a vertical sectional view of a, typical cement packing machine embodying my invention. Only so much of the ma chine itself is shown as is necessary to unrevent derstand the invention and details are omitted. This figure illustratesthe position of the parts justprior to the, commencement of the downward movement of the chair and ba which latter is almost filled. Fig. 2 is a etail fragmentary view showing the 1parts in position just after the bag is comp etely filled and immediately prior to the removal of the filled bag Fig. 3 is a detail view illustrating parts of the locking mechanism returnin to normal osition.

In ig. 1 the re erence numeral 1 denotes the frame of the machine.

2 is the main or feeder shaft to which power is sup lied in any suitable manner, not shown. he feeder shaft revolves within a feed box 12 which is located below and forms a continuation of a hopper 8 into which the cement is fed by any Suitable means not shown. The feed shaft carries a feeder 13 comprising a plurality of blades or win 14. The feeder rotates at a high rate 0 speed and discharges the cement from the feed box 12 into the tube or spout 15 which obviously constitutes a receiving means for the bag. As stated above the spout is inserted through a valve in the bag 16, which valve is diagrammatically indicated at 17, and it will be clear that the spout receives the cement from the feed box and feeds the cement into the bag.

The bag is supported partly on the spout, but the greater weight of the bag as it is filled is supported in the bag chair 18 which is in the form of a large loop having a bottom 19 and sides 18,-only one of which is seen. The sides 18 merge at the top at 20 in a pivot to which is connected a rod 3 which is pivoted within the hopper 8 in a housing and supports the chair at the top. The sides 18 of the chair form an A frame joined at the top by the pivot 20 and having a bottom 19.

he chair is provided with scale cups 21 on its sides 18, on the outside thereo one on each side, by means of which the chair rests on corresponding scale points 22 on the scale beam 23which is forked to enable it to pass on the outside of the chair as will be understood. The scale beam rests on one or more knife edges 24 supported on the frame at 25 and carries the weight 26, which may be adjusted by a screw 5 in threaded engagement with the weight as shown. 6 is an adjustable wei ht stop.

The sides 18 o the chair forin inwardly projecting win 30, one on each side connected bv a bri' 31 to which the spout 15 is suitably secured by a spout support 32.

Secured to the bridge 31 is also a clamp bracket 33 to which is pivoted at 34 a sack clamp 35 adapted to clamp the sack on to the spout as shown.

is a latch pivoted in the sack clamp at All of the aforesaid parts are thus su ported on and move vertically with t e chair 18. a

40 is a discharge lever which is formed as a smaller A frame and which is movable inside the A-fi-ame 18, 20. The discharge lever has two sides 40 (only one is seen) joined by an up 1' bag support and a bottom piece 9. e discharge lever is pivoted at 10 on and within the chair.

60 is an adjustably mounted bag bottom provided with lugs 61 adapted to fit into one of several notches w on the discharge lever. The bag bottom is sump-formed and may be adjusted vertically to suit the size of bag used.

The diseha lever carries a handle 48 at the top and a teh release 42.

44 is a hook pivoted on the discharge lever at 45 and provided with an ad ustable stop 65.

68 is a spring which urges the hook 44 upwardly into engagement with a fixed hook 4 secured to the machine. The hooks 44 and 47 constitute a locking means or device for preventing premature discharge of the filled bag of cement as will appear more clearl hereinafter.

It ollows from thefore ing description that the chair 18 rests on t e scale beam 23 and is movable vertically together with the spput 15 and surrounding parts, and that t discharge lever 40 moves vertically with the chair to which it is pivoted at 10 and is also adapted to tilt in a vertical plane on said pivot, and that when the operator grasps the handle 43 he is able to tilt the discharge lever on the chair, the side of the discharge lever moving inside the chair side 18 between the latter and the bracket 33.

The operation is as follows: The weight 26 is ad usted to counterbalance the weight of the chair and discharge lever with the parts thereon fplus the required weight of cement to be lled in the sack. The scale beam therefore rests on stop 6 maintaining the chair in its u r position as shown in Fig. 1 with the book 44 in engagement with the hook 47, and the spout 15 in register with the discharge opening 51 of the feed box 12. A sack is pushed in over the in 15 and held against accidental remova by the clamp 35 as is obvious. The 0 rate: next operates a cut oil slide 52, see ig. 2, and cement is discharged by the fiaeder 13, through opening or outlet 51, through the receiving the bag. As the bagdllls it settles within the discharge lever 40 testing against the upper bag support 70 and also in the bottom su port orsooop60. Whenihebagisneary full, its weight causes a downward movement of the chair againm the w 26. When the full quantity of cement as entered the bag, the weight thereof causes the spout 16 and bag valve 17 into i chair to move down to "its lowermost position and the rear. end ofthe scale beam moves up until stopped by the adjustable stop 7 5., The lowermost position of' the parts are shown in Fig. 2 where it will be observed that the spout 15 is out of register with the outlet 51 and also that the hook 44 has cleared the hook 47. The operator now takes hold of'handle 43 and tilts the discharge lever .40'outwardly. During the first part of this'movement the release 42 strikes latch 36 to release the-bag, after which the bag is discharged as explained above. As soon as the bag falls out of the chair, the weight 26 causes the latter to rise. The operator thereupon moves the discharge lever back into thechair and the bevel faces 7 6-on the hooks slide against each other permitting hook 44-to pass under and behind the hook 47 as is clear from Fig. 3 after which the operation may be repeated.

The feature to be particularly observed is, that during the downward movement of the chair, the discharge lever is locked against movementrelative to the chair because of the hooks44 and 47, and only when hook 44 is clear of hook 47 can the bag be discharged.

Without the hooks 44 and 47 the operator could discharge the bag as soon as the chair began to move down and before the bag was filled, it being also understood that the adjustment of the weight 26 is so regulated that only whenthe chair has completely moved down does the bag contain the required amount of cement. g

It will be seen that this invention provides a cheap and easily attached locking device for preventing premature discharge of the full bag." Also, that the length of the engaging portion of the hook 44 may be quickly adjusted by the stop 65 on said hook.

The invention is not limited to the particular type of machine illustrated, and I claim its use on other packing machines and also claim such changes of parts and in the arrangement thereof as Well as other modifications within the scope of the claims.

1. The combination ofa feeding means having an outlet, means for supporting a bag to be filled with the receiving opening of the bag in register with said outlet, mechanism for removing the filled bag from said feeding means and means preventing premature operation of said mechanism.

2. The combination of a feeding means having an outlet, means for supporting a bag to be filled with the receiving opening of the bag in register with said outlet, mechanism forremovin the filled bag from said feeding means an means preventing operation of said bag removing mechanism before the said bag has been filled.

. 3., The 'combination' of: feeding means, means for supporting a bag to be lled in a predetermined position with respect to said feeding means, mechanism for removing the filled bag and means preventing the operation of said removing mechanism before the said bag has been filled.

outlet to discontinue the filling of the bag,

means for removing the filled bag and looking means for preventing the removal of the bag before it is filled, said locking means comprising a fixed member, a movable member supported on said bag removing means and means for adjusting said movable member.

6. The combination of feeding means having an outlet, means for supportinga bag with its inlet in communication with said outlet, means for moving the bag inlet past said outlet to discontinue the feeding of the bag, mechanism for removing the bag and locking means preventing the removal of the bag while the said outlet and inlet communicate.

7. The combination of feeding means having an outlet, mechanism for supporting a bag in position to be filled from said outlet, means for operating said'supporting mech- 1anism to remove the filled bag from the said position to discontinue the filling thereof, bag discharging mechanism and means preventing the operation of said discharging mechanism while the bag is being filled and moved away from the outlet.

8. The combination of a feeding mechanism having an outlet, means for supporting a bag in position to be filled through said outlet, .means for operating said sup porting means to remove the bag from said outlet when said bag is filled, discharging means and locking means comprising a fixed and a movable member for preventing operation of the said discharging means while thedsaid supporting means are being operate 9. The combination of a feeding mechanism, means for supporting a bag to be filled therefrom, mechanism for removing said bag from said feeding mechanism after it has been filled, discharging means for discharging the-bag from the machine, locking means for preventing prematureoperation of said discharging means and com ioo prisin a fixed member, a movable member carrie by said discharging means and operatively engaged with said fixed member While the bag is being filled.

10. The combination of a feeding mechanism, means for supporting a ba to be filled therefrom, means for disc arging said bag after it has been filled and locking means for preventing premature operation of said discharging means said locking means comprising a member secured to the said machine, a movable member secured to said discharging means and means for keeping the movable locking member in engagementwith the fixed locking member while the bag is being filled.

11. The combination of a feeding mechanism, a bag supporting chair, a discharge lever pivoted on said chair, a fixed locking member, a movable locking member on said discharge lever and adapted to en go said fixed member during the filling 0 the bag and means for operating said movable looking member.

12. The combination of a feeding mechanism, means for supporting a bag to be filled from said mechanism, a bag discharging device, a locking mechanism adapted to prevent said device from being operated before a bag is filled and comprising a fixed member. a movable member carried by said discharging devicc, and in engagement with said fixed member durin the filling of the bag, means for automatically disengaging said two locking members when the bag is filled, means for operating said discharging device away from said feeding mechanism to discharge a bag and means on said macaw locking members for causing the some to to be filled with cement, clamping means for said bag, dischar 'ng mechanism for dischar 'ng the fill bag and means preventing t e operation of said discharging means before the bag is filled.

14. In a cement packing machine the combination of means for supporting a bag to be filled with cement, clamping means for said bag, dischar ing mechanism for discharging the fill bag, means on said discharging mechanism for releasing said clamping means to free the bag and a locking device 1preventing operation of said means for re easing the bag.

15. In a cement packing machine the combination of mechanism for supporting a bag in position to be filled, a discharge device, means for operating the said suprting mechanism to remove the filled bag, ocking means preventing o ration of said discharging device before bag is filled, said locking mechanism being adapted to unlock onl when the bag is filled and to automatica ly re-l0ck when the said discharging device is brought back into normal position.

Signed at Devils Slide in the county of Morgan and State of Utah this 16th day of January A. D. 1915.

ALEXANDER V. JENSEN.

\Vitnesses:

F. H. Nonmo, Eowm A. WILDB.

copies or! this patent may be obtained for he cents each, by addressing the "Commissioner at Patents, Washington, D. 0. 

